##  [Binding Affinity](/binding-affinity) 

  ##  [Binding Affinity](https://natural.quantumdictionary.io/binding-affinity-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)



**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Quantitative measure of the strength of an interaction between two molecules at equilibrium, commonly expressed by an equilibrium dissociation constant (Kd), association constant (Ka) or related free energy (ΔG).